[Ips-dhfpr] IPS Daily HF Prop Report - 21 April 16 issued 2330 UT on 21 Apr 2016 [SEC=UNCLASSIFIED]

Regional Warning Centre rwc at ips.gov.au
Fri Apr 22 09:30:56 EST 2016


SUBJ: SWS DAILY HF PROPAGATION REPORT
ISSUED AT 2330UT/21 APRIL 2016 BY Space Weather Services
FROM THE AUSTRALIAN SPACE FORECAST CENTRE
AUSTRALIAN REGION SUMMARY AND FORECAST

1. SUMMARY (21 APRIL) 
Date   T index  Conditions    
21 Apr    20    Normal-fair    

Flares: none.

MUFs:
   Cocos Island Region:
      Depressed by 15% during local day.
      Depressed by 35% during local night.
   Niue Island Region:
      Depressed by 20% during local day.
      Depressed by 45% during local night.
   Northern Australian Region:
      Depressed by 20% during local day.
      Depressed by 35% during local night.
   Southern Australian Region:
      Depressed by 15% during local day.
      Depressed by 20% during local night.
   Antarctic Region (Casey/Scott Base/Davis/Mawson):
      Near predicted monthly values over the UT day.

PCA Event : No event.

Monthly T index:
Month  T index
Mar      50
Apr      50
May      49


2. FORECAST (22 APRIL - 24 APRIL)
Date   T index  Conditions       MUFs                              
22 Apr    20    Normal-fair      Depressed 20 %/near predicted 
                                 monthly values
23 Apr    10    Fair-poor        About 20% below predicted monthly 
                                 values    
24 Apr    10    Fair-poor        About 20% below predicted monthly 
                                 values   

COMMENT: IPS HF Communications Warning 20 was issued on 20 April 
and is current for 20-22 Apr. Conditions for HF radio propagation 
on UT day 21 Apr were generally mildly depressed over all Australian 
regions. Conditions are expected to be mildly depressed today, 
22 Apr. The above HF conditions are mainly associated with low 
incoming solar ionising flux. On UT days 23-24 Apr, the mid and 
high latitude regions could experience slightly stronger MUF 
depressions in response to the expected active geomagnetic conditions 
on 23 Apr.

----------------------------------------------------------
For an explanation of some of the terms in this report, go to
http://www.sws.bom.gov.au, and follow links to Educational->
Glossary on Solar Terrestrial Terms.

Space Weather Services              email: asfc at bom.gov.au
Bureau of Meteorology
PO Box 1386                         WWW: http://www.sws.bom.gov.au
Haymarket NSW 1240  AUSTRALIA       FTP: ftp://ftp-out.sws.bom.gov.au
tel: +61 2 9213 8010                fax: +61 2 9213 8060 

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